{
  "bibcode": "2006GCN..5759....1Y",
  "body": "F. Yuan (U Mich), E.S. Rykoff (U Mich) report on behalf of the ROTSE\ncollaboration: \n\nFurther analysis of the early ROTSE-IIIc images (Rykoff, et al, GCN \n5752) reveals a faint, fading afterglow at the XRT position (Mineo, et \nal, GCN 5753) consistent with the position of the i-band candidate \nreported by Berger (GCN 5754).  This source was not detected in the \noriginal analysis because of source confusion with a nearby star, and \nbecause the afterglow is near our detection threshold.\n\nIn our initial 5 s image beginning at 18:36:46.6 UT, 44.7 s after the \nburst, the afterglow is at 15.6+/-0.2 mag calibrated relative to USNO \nB1.0 (R).  It decays with a power law index ~ -0.9 up to ~155 s after \nthe burst when it is no longer detected.\n\nstart UT       end UT      t_exp(s)   mag      t_start-tGRB(s)  Coadd?\n--------------------------------------------------------------------\n18:36:46.6   18:36:51.6      5      15.6+/-0.2     44.7          N",
  "circularId": 5759,
  "createdOn": 1161892573000,
  "email": "yuanfang@umich.edu",
  "subject": "GRB061025: ROTSE-III Confirmation of Optical Counterpart",
  "submitter": "Fang Yuan at ROTSE  <yuanfang@umich.edu>",
  "eventId": "GRB 061025"
}